We have 2 dogs (+ 6 cats)- works great for us, I think it just depends on the dogs. We got Jessie Joy 2 1/2 years ago, Simon loves her, she thinks he is "her" dog. When we adopted her we took Simon with us to meet first, I think that was a good idea. They miss each other when they are apart - it is evident.
Good luck deciding.
A dog is the only thing on earth that loves you more than he loves himself.